Battery charger



FIG. 1 is a front view of a battery charger;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof

FIG. 5 is a top view thereof

FIG. 6 is a bottom view thereof

FIG. 7 is a front right perspective view thereof;

FIG. 8 is a front left perspective view thereof;

FIG. 9 is a rear right perspective view thereof; and,

FIG. 10 is a rear left perspective view thereof.

The broken lines shown in the drawings illustrate portions of thebattery charger that form no part of the claimed design.

CLAIM The ornamental design for a battery charger, as shown anddescribed.